Optimal monitoring time of kiwifruit orchard soil moisture content under irrigation using the red-edge indices acquired by UAV-based mutilspectral data. - Mingjun Wang; Shidan Zhu; Shouzheng Jiang; Fei Chen; Xiuyun Yu; Lu Zhao; Zongjun Wu; Quanshan Liu; Ningbo Cui; Zhihui Wang; Liwen Xing (Comput. Electron. Agric., 2025)